/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:41,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:41,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:42,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:42,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:42,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:42,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:42,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:42,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:42,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:42,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:42,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:42,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:42,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:42,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:42,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:42,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:42,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:42,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:42,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:42,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:42,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:42,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:42,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:42,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:42,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:42,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:42,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:42,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:42,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:42,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:42,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:42,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:42,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:42,132 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:42,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:42,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:42,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:42,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:42,133 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:42,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:42,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:42,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:42,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:42,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:42,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:42,134 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:42,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:42,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:42,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:42,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:42,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:42,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2020-10-23 20:25:42,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed32976c/5cf6ba4823f24560b88e9abf846824d1/FLAG9a02f5109 [2020-10-23 20:25:43,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:43,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c [2020-10-23 20:25:43,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed32976c/5cf6ba4823f24560b88e9abf846824d1/FLAG9a02f5109 [2020-10-23 20:25:43,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ed32976c/5cf6ba4823f24560b88e9abf846824d1 [2020-10-23 20:25:43,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:43,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:43,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:43,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:43,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:43,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:43,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544909a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43, skipping insertion in model container [2020-10-23 20:25:43,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:43,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:43,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:43,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:43,942 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:43,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:43,977 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:43,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43 WrapperNode [2020-10-23 20:25:43,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:43,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:43,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:43,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:43,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:43,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... [2020-10-23 20:25:44,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:44,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:44,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:44,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:44,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:44,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:44,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:44,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:44,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:25:44,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:44,339 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:44,339 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 20:25:44,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:44 BoogieIcfgContainer [2020-10-23 20:25:44,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:44,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:44,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:44,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:44,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:43" (1/3) ... [2020-10-23 20:25:44,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf47803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:44, skipping insertion in model container [2020-10-23 20:25:44,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:43" (2/3) ... [2020-10-23 20:25:44,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf47803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:44, skipping insertion in model container [2020-10-23 20:25:44,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:44" (3/3) ... [2020-10-23 20:25:44,353 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2020-10-23 20:25:44,384 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:44,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:44,429 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:44,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:44,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:44,472 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:44,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:44,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:44,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:44,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:44,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 20:25:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 20:25:44,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:44,502 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] [2020-10-23 20:25:44,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash 31597307, now seen corresponding path program 1 times [2020-10-23 20:25:44,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:44,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144432922] [2020-10-23 20:25:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:44,609 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:45,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144432922] [2020-10-23 20:25:45,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:45,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:25:45,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353390599] [2020-10-23 20:25:45,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:25:45,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:45,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:25:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:25:45,287 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 9 states. [2020-10-23 20:25:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:45,905 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-10-23 20:25:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:25:45,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-23 20:25:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:45,916 INFO L225 Difference]: With dead ends: 62 [2020-10-23 20:25:45,916 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 20:25:45,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:25:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 20:25:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-23 20:25:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 20:25:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-23 20:25:45,977 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 26 [2020-10-23 20:25:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:45,977 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-23 20:25:45,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:25:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-23 20:25:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 20:25:45,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:45,980 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] [2020-10-23 20:25:45,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:45,980 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash -928867771, now seen corresponding path program 1 times [2020-10-23 20:25:45,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:45,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037873167] [2020-10-23 20:25:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:46,175 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-23 20:25:46,886 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-23 20:25:46,900 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:25:46,902 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 20:25:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:47,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037873167] [2020-10-23 20:25:47,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:47,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:25:47,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963849643] [2020-10-23 20:25:47,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:25:47,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:47,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:25:47,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:25:47,141 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 10 states. [2020-10-23 20:25:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:47,512 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-23 20:25:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:25:47,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-23 20:25:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:47,513 INFO L225 Difference]: With dead ends: 39 [2020-10-23 20:25:47,514 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:25:47,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:25:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:25:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:25:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:25:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:25:47,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-10-23 20:25:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:47,517 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:25:47,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:25:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:25:47,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:25:47,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:47,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:25:47,988 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,988 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,989 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,989 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,989 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,989 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,989 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:25:47,990 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,990 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:25:47,990 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,990 INFO L270 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|)) [2020-10-23 20:25:47,990 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,991 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:25:47,991 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:25:47,991 INFO L270 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-10-23 20:25:47,991 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:25:47,991 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:25:47,991 INFO L270 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-10-23 20:25:48,003 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 28) the Hoare annotation is: true [2020-10-23 20:25:48,004 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,005 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 12 28) the Hoare annotation is: false [2020-10-23 20:25:48,005 INFO L270 CegarLoopResult]: At program point L25-1(lines 19 26) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,005 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,005 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,006 INFO L270 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,006 INFO L270 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 20:25:48,006 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 1) [2020-10-23 20:25:48,006 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 26) the Hoare annotation is: false [2020-10-23 20:25:48,006 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-23 20:25:48,006 INFO L277 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-10-23 20:25:48,007 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 12 28) the Hoare annotation is: false [2020-10-23 20:25:48,007 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-23 20:25:48,007 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 20:25:48,008 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 20:25:48,008 INFO L270 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 20:25:48,009 INFO L270 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 20:25:48,009 INFO L270 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 20:25:48,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:48 BoogieIcfgContainer [2020-10-23 20:25:48,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:48,045 INFO L168 Benchmark]: Toolchain (without parser) took 4308.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.1 MB in the beginning and 166.7 MB in the end (delta: -36.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:48,048 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:48,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.24 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 120.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:48,052 INFO L168 Benchmark]: Boogie Preprocessor took 36.58 ms. Allocated memory is still 154.1 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:48,052 INFO L168 Benchmark]: RCFGBuilder took 324.79 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 105.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:48,054 INFO L168 Benchmark]: TraceAbstraction took 3693.42 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 105.4 MB in the beginning and 166.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 75.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:48,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.24 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 120.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.58 ms. Allocated memory is still 154.1 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 324.79 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 105.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3693.42 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 105.4 MB in the beginning and 166.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 75.9 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: 19]: Loop Invariant Derived loop invariant: x + y + 2 <= 2 * ((x + y + 2) / 2) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 55 SDslu, 165 SDs, 0 SdLazy, 167 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 53 PreInvPairs, 69 NumberOfFragments, 166 HoareAnnotationTreeSize, 53 FomulaSimplifications, 316 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 37 FomulaSimplificationsInter, 618 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...