/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/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:25:38,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:25:38,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:25:38,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:25:38,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:25:38,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:25:38,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:25:38,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:25:38,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:25:38,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:25:38,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:25:38,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:25:38,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:25:38,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:25:38,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:25:38,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:25:38,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:25:38,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:25:38,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:25:38,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:25:38,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:25:38,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:25:38,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:25:38,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:25:38,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:25:38,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:25:38,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:25:38,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:25:38,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:25:38,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:25:38,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:25:38,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:25:38,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:25:38,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:25:38,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:25:38,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:25:38,130 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:25:38,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:25:38,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:25:38,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:25:38,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:25:38,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:25:38,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:25:38,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:25:38,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:25:38,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:25:38,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:25:38,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:25:38,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:25:38,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-10-24 02:25:38,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cd7a383/80eab75c5b364955bfb7ebc2b8a136e5/FLAG3062eb791 [2020-10-24 02:25:39,318 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:25:39,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-10-24 02:25:39,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cd7a383/80eab75c5b364955bfb7ebc2b8a136e5/FLAG3062eb791 [2020-10-24 02:25:39,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cd7a383/80eab75c5b364955bfb7ebc2b8a136e5 [2020-10-24 02:25:39,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:25:39,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:25:39,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:39,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:25:39,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:25:39,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d55f091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39, skipping insertion in model container [2020-10-24 02:25:39,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:25:39,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:25:39,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:39,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:25:39,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:39,714 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:25:39,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39 WrapperNode [2020-10-24 02:25:39,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:39,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:25:39,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:25:39,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:25:39,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2020-10-24 02:25:39,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:25:39,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:25:39,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:25:39,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:25:39,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (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 [2020-10-24 02:25:39,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:25:39,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:25:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:25:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:25:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:25:39,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:25:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:25:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:25:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:25:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:25:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:25:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:25:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:25:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:25:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:25:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:25:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:25:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:25:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:25:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:25:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:25:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:25:40,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:25:40,344 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:25:40,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:40 BoogieIcfgContainer [2020-10-24 02:25:40,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:25:40,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:25:40,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:25:40,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:25:40,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:39" (1/3) ... [2020-10-24 02:25:40,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a55bc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:40, skipping insertion in model container [2020-10-24 02:25:40,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (2/3) ... [2020-10-24 02:25:40,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a55bc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:40, skipping insertion in model container [2020-10-24 02:25:40,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:40" (3/3) ... [2020-10-24 02:25:40,361 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-10-24 02:25:40,375 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:25:40,381 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:25:40,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:25:40,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:25:40,424 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:25:40,424 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:25:40,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:25:40,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:25:40,425 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:25:40,425 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:25:40,425 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:25:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-24 02:25:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 02:25:40,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:40,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:40,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash -808329830, now seen corresponding path program 1 times [2020-10-24 02:25:40,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:40,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796493393] [2020-10-24 02:25:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:40,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796493393] [2020-10-24 02:25:40,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:40,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:25:40,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650140367] [2020-10-24 02:25:40,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:25:40,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:25:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:25:40,982 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 8 states. [2020-10-24 02:25:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:41,687 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-10-24 02:25:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 02:25:41,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-24 02:25:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:41,700 INFO L225 Difference]: With dead ends: 92 [2020-10-24 02:25:41,700 INFO L226 Difference]: Without dead ends: 58 [2020-10-24 02:25:41,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:25:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-24 02:25:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-24 02:25:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-24 02:25:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-10-24 02:25:41,783 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 46 [2020-10-24 02:25:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:41,784 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-10-24 02:25:41,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:25:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-10-24 02:25:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-24 02:25:41,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:41,789 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:41,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:25:41,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:41,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1847064117, now seen corresponding path program 1 times [2020-10-24 02:25:41,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:41,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555381806] [2020-10-24 02:25:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-24 02:25:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555381806] [2020-10-24 02:25:42,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:42,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-24 02:25:42,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763117214] [2020-10-24 02:25:42,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:25:42,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:25:42,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:42,008 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 10 states. [2020-10-24 02:25:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:42,645 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-24 02:25:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:25:42,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-24 02:25:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:42,649 INFO L225 Difference]: With dead ends: 70 [2020-10-24 02:25:42,650 INFO L226 Difference]: Without dead ends: 66 [2020-10-24 02:25:42,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:25:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-24 02:25:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-24 02:25:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-24 02:25:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-24 02:25:42,676 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 51 [2020-10-24 02:25:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:42,677 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-24 02:25:42,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:25:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-24 02:25:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-24 02:25:42,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:42,681 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:42,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:25:42,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1467554325, now seen corresponding path program 1 times [2020-10-24 02:25:42,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:42,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041745786] [2020-10-24 02:25:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-24 02:25:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-24 02:25:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:25:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:25:43,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041745786] [2020-10-24 02:25:43,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:43,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 02:25:43,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130385330] [2020-10-24 02:25:43,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 02:25:43,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 02:25:43,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:25:43,008 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-10-24 02:25:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:44,046 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-10-24 02:25:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 02:25:44,050 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-24 02:25:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:44,052 INFO L225 Difference]: With dead ends: 81 [2020-10-24 02:25:44,052 INFO L226 Difference]: Without dead ends: 77 [2020-10-24 02:25:44,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:25:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-24 02:25:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-24 02:25:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-24 02:25:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-24 02:25:44,073 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 66 [2020-10-24 02:25:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:44,073 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-24 02:25:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 02:25:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-24 02:25:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-24 02:25:44,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:44,076 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:25:44,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:25:44,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:44,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:44,077 INFO L82 PathProgramCache]: Analyzing trace with hash 271569781, now seen corresponding path program 2 times [2020-10-24 02:25:44,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:44,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079442515] [2020-10-24 02:25:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-24 02:25:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-24 02:25:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:25:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-24 02:25:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-24 02:25:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-24 02:25:44,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079442515] [2020-10-24 02:25:44,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:44,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 02:25:44,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982935656] [2020-10-24 02:25:44,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 02:25:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 02:25:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-24 02:25:44,453 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2020-10-24 02:25:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:45,663 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-24 02:25:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-24 02:25:45,663 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-10-24 02:25:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:45,664 INFO L225 Difference]: With dead ends: 76 [2020-10-24 02:25:45,664 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:25:45,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 02:25:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:25:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:25:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:25:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:25:45,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-10-24 02:25:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:45,667 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:25:45,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 02:25:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:25:45,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:25:45,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:25:45,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,751 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,752 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,753 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:25:46,754 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:25:46,754 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:25:46,754 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:46,754 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:46,754 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:46,754 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-24 02:25:46,754 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:25:46,754 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 56) the Hoare annotation is: true [2020-10-24 02:25:46,755 INFO L270 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0)) [2020-10-24 02:25:46,755 INFO L270 CegarLoopResult]: At program point L40(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-10-24 02:25:46,755 INFO L277 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: true [2020-10-24 02:25:46,755 INFO L277 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: true [2020-10-24 02:25:46,755 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-24 02:25:46,755 INFO L277 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-10-24 02:25:46,756 INFO L277 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true [2020-10-24 02:25:46,756 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-24 02:25:46,756 INFO L270 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 (* 2 main_~ielen~0)) main_~bufsize_0~0)) [2020-10-24 02:25:46,756 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0) 2))) [2020-10-24 02:25:46,756 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0) (<= main_~bufsize~0 main_~bufsize_0~0)) [2020-10-24 02:25:46,756 INFO L270 CegarLoopResult]: At program point L49-4(line 49) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0) 2)) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post6|) 2)))) [2020-10-24 02:25:46,757 INFO L270 CegarLoopResult]: At program point L49-5(line 49) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post6|) 2)))) [2020-10-24 02:25:46,757 INFO L270 CegarLoopResult]: At program point L49-6(lines 49 53) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-10-24 02:25:46,757 INFO L277 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-10-24 02:25:46,757 INFO L277 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-10-24 02:25:46,757 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-24 02:25:46,757 INFO L277 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-10-24 02:25:46,758 INFO L277 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-10-24 02:25:46,758 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-24 02:25:46,758 INFO L277 CegarLoopResult]: At program point L54(lines 24 56) the Hoare annotation is: true [2020-10-24 02:25:46,758 INFO L270 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-10-24 02:25:46,758 INFO L270 CegarLoopResult]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-10-24 02:25:46,758 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0) (<= (+ main_~leader_len~0 main_~bufsize~0) main_~bufsize_0~0)) [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: true [2020-10-24 02:25:46,759 INFO L270 CegarLoopResult]: At program point L38-1(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: true [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: true [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-10-24 02:25:46,759 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2020-10-24 02:25:46,760 INFO L270 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-10-24 02:25:46,760 INFO L270 CegarLoopResult]: At program point L47(lines 47 48) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2020-10-24 02:25:46,760 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-10-24 02:25:46,760 INFO L270 CegarLoopResult]: At program point L39(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-10-24 02:25:46,760 INFO L277 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-10-24 02:25:46,760 INFO L270 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-10-24 02:25:46,761 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:46,761 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:25:46,761 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:46,761 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:46,761 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:46,761 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:46,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:25:46 BoogieIcfgContainer [2020-10-24 02:25:46,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:25:46,785 INFO L168 Benchmark]: Toolchain (without parser) took 7424.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.7 MB in the beginning and 64.3 MB in the end (delta: 63.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:46,786 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 100.4 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:25:46,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:46,788 INFO L168 Benchmark]: Boogie Preprocessor took 79.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:46,789 INFO L168 Benchmark]: RCFGBuilder took 555.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 130.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:46,790 INFO L168 Benchmark]: TraceAbstraction took 6429.04 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.3 MB in the beginning and 64.3 MB in the end (delta: 66.0 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:46,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 100.4 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 555.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 130.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6429.04 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.3 MB in the beginning and 64.3 MB in the end (delta: 66.0 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 234 SDslu, 390 SDs, 0 SdLazy, 1252 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 65 LocationsWithAnnotation, 125 PreInvPairs, 162 NumberOfFragments, 339 HoareAnnotationTreeSize, 125 FomulaSimplifications, 563 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 65 FomulaSimplificationsInter, 1481 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 48550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 72/86 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...