/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/eca-rers2012/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:50:42,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:50:42,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:50:42,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:50:42,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:50:42,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:50:42,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:50:42,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:50:42,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:50:42,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:50:42,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:50:42,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:50:42,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:50:42,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:50:42,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:50:42,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:50:42,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:50:42,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:50:42,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:50:42,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:50:42,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:50:42,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:50:42,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:50:42,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:50:42,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:50:42,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:50:42,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:50:42,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:50:42,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:50:42,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:50:42,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:50:42,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:50:42,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:50:42,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:50:42,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:50:42,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:50:42,541 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:50:42,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:50:42,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:50:42,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:50:42,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:50:42,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:50:42,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:50:42,543 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:50:42,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:50:42,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:50:42,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:50:42,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:50:42,995 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:50:42,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-11-07 01:50:43,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aec9b069/7b6243bc2c194d25be6698363b8277a0/FLAGddc8216e0 [2020-11-07 01:50:43,954 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:50:43,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-11-07 01:50:43,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aec9b069/7b6243bc2c194d25be6698363b8277a0/FLAGddc8216e0 [2020-11-07 01:50:44,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aec9b069/7b6243bc2c194d25be6698363b8277a0 [2020-11-07 01:50:44,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:50:44,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:50:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:50:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:50:44,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:50:44,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:44,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0fe900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44, skipping insertion in model container [2020-11-07 01:50:44,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:44,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:50:44,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:50:44,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:50:44,802 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:50:44,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:50:44,978 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:50:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44 WrapperNode [2020-11-07 01:50:44,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:50:44,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:50:44,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:50:44,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:50:44,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:44,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... [2020-11-07 01:50:45,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:50:45,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:50:45,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:50:45,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:50:45,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:50:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:50:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:50:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:50:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 01:50:45,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:50:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 01:50:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:50:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:50:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:50:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:50:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:50:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 01:50:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:50:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:50:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:50:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:50:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:50:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:50:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:50:47,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:50:47,358 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:50:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:47 BoogieIcfgContainer [2020-11-07 01:50:47,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:50:47,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:50:47,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:50:47,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:50:47,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:50:44" (1/3) ... [2020-11-07 01:50:47,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb4475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:47, skipping insertion in model container [2020-11-07 01:50:47,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:44" (2/3) ... [2020-11-07 01:50:47,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb4475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:47, skipping insertion in model container [2020-11-07 01:50:47,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:47" (3/3) ... [2020-11-07 01:50:47,371 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-11-07 01:50:47,426 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:50:47,430 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:50:47,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:50:47,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:50:47,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:50:47,471 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:50:47,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:50:47,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:50:47,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:50:47,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:50:47,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:50:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-11-07 01:50:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-07 01:50:47,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:50:47,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:50:47,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:50:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:50:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1388413256, now seen corresponding path program 1 times [2020-11-07 01:50:47,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:50:47,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677790399] [2020-11-07 01:50:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:50:47,629 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:50:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:50:48,098 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-07 01:50:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:50:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:50:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:50:48,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677790399] [2020-11-07 01:50:48,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:50:48,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 01:50:48,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934282381] [2020-11-07 01:50:48,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 01:50:48,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:50:48,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 01:50:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 01:50:48,244 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 4 states. [2020-11-07 01:50:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:50:51,334 INFO L93 Difference]: Finished difference Result 1102 states and 1528 transitions. [2020-11-07 01:50:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 01:50:51,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-07 01:50:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:50:51,356 INFO L225 Difference]: With dead ends: 1102 [2020-11-07 01:50:51,356 INFO L226 Difference]: Without dead ends: 584 [2020-11-07 01:50:51,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:50:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-11-07 01:50:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 554. [2020-11-07 01:50:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-11-07 01:50:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 651 transitions. [2020-11-07 01:50:51,585 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 651 transitions. Word has length 76 [2020-11-07 01:50:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:50:51,586 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 651 transitions. [2020-11-07 01:50:51,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 01:50:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 651 transitions. [2020-11-07 01:50:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-07 01:50:51,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:50:51,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:50:51,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:50:51,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:50:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:50:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash -68761346, now seen corresponding path program 1 times [2020-11-07 01:50:51,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:50:51,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042807381] [2020-11-07 01:50:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:50:52,245 WARN L194 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 54 [2020-11-07 01:50:52,423 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-07 01:50:52,918 ERROR L275 FreeRefinementEngine]: Caught unknown exception: No quantified variables given [2020-11-07 01:50:52,919 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-11-07 01:50:52,919 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: No quantified variables given at de.uni_freiburg.informatik.ultimate.logic.NoopScript.quantifier(NoopScript.java:505) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.quantifier(WrapperScript.java:266) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.quantifier(WrapperScript.java:266) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.checkForAll(FastUPRCore.java:370) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.periodLoop(FastUPRCore.java:179) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.prefixLoop(FastUPRCore.java:154) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:145) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:109) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:89) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:292) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-07 01:50:52,925 INFO L168 Benchmark]: Toolchain (without parser) took 8724.68 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 125.7 MB in the beginning and 127.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 70.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:50:52,926 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:50:52,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 128.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:50:52,928 INFO L168 Benchmark]: Boogie Preprocessor took 112.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 123.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:50:52,929 INFO L168 Benchmark]: RCFGBuilder took 2268.83 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 61.8 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:50:52,930 INFO L168 Benchmark]: TraceAbstraction took 5559.86 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 61.8 MB in the beginning and 127.8 MB in the end (delta: -66.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:50:52,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 769.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 128.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 123.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2268.83 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 61.8 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5559.86 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 61.8 MB in the beginning and 127.8 MB in the end (delta: -66.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: No quantified variables given de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: No quantified variables given: de.uni_freiburg.informatik.ultimate.logic.NoopScript.quantifier(NoopScript.java:505) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...