/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/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:52:28,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:52:28,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:52:28,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:52:28,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:52:28,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:52:28,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:52:28,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:52:28,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:52:28,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:52:28,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:52:28,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:52:28,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:52:28,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:52:28,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:52:28,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:52:28,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:52:28,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:52:28,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:52:28,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:52:28,327 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 01:52:28,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:52:28,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:52:28,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:52:28,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:52:28,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:52:28,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:52:28,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:52:28,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:52:28,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:52:28,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:52:28,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:52:28,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:52:28,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:52:28,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:52:28,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:52:28,352 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:52:28,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:52:28,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:52:28,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:52:28,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:52:28,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:52:28,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:52:28,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:52:28,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:52:28,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:52:28,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:52:28,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:52:28,761 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:52:28,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-11-07 01:52:28,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ebd859a1/a23c404684f741c6bdc1e17585216a8e/FLAG2b4742544 [2020-11-07 01:52:29,509 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:52:29,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-11-07 01:52:29,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ebd859a1/a23c404684f741c6bdc1e17585216a8e/FLAG2b4742544 [2020-11-07 01:52:29,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ebd859a1/a23c404684f741c6bdc1e17585216a8e [2020-11-07 01:52:29,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:52:29,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:52:29,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:29,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:52:29,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:52:29,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:29" (1/1) ... [2020-11-07 01:52:29,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1e436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:29, skipping insertion in model container [2020-11-07 01:52:29,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:29" (1/1) ... [2020-11-07 01:52:29,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:52:29,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:52:30,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:30,245 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:52:30,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:30,343 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:52:30,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30 WrapperNode [2020-11-07 01:52:30,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:30,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:52:30,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:52:30,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:52:30,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (1/1) ... [2020-11-07 01:52:30,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:52:30,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:52:30,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:52:30,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:52:30,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (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 01:52:30,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:52:30,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:52:30,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:52:30,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:52:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:52:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:52:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:52:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:52:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:52:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:52:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:52:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:52:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:52:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:52:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:52:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:52:31,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:52:31,650 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 01:52:31,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:31 BoogieIcfgContainer [2020-11-07 01:52:31,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:52:31,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:52:31,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:52:31,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:52:31,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:29" (1/3) ... [2020-11-07 01:52:31,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1336bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:31, skipping insertion in model container [2020-11-07 01:52:31,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30" (2/3) ... [2020-11-07 01:52:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1336bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:31, skipping insertion in model container [2020-11-07 01:52:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:31" (3/3) ... [2020-11-07 01:52:31,663 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-11-07 01:52:31,679 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:52:31,684 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:52:31,697 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:52:31,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:52:31,723 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:52:31,723 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:52:31,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:52:31,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:52:31,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:52:31,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:52:31,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:52:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2020-11-07 01:52:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 01:52:31,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:31,760 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] [2020-11-07 01:52:31,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash -545522146, now seen corresponding path program 1 times [2020-11-07 01:52:31,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:31,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735779061] [2020-11-07 01:52:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:31,853 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:32,205 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 01:52:32,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735779061] [2020-11-07 01:52:32,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:32,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:52:32,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048574136] [2020-11-07 01:52:32,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:52:32,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:52:32,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:52:32,241 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 3 states. [2020-11-07 01:52:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:32,609 INFO L93 Difference]: Finished difference Result 381 states and 496 transitions. [2020-11-07 01:52:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:52:32,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-11-07 01:52:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:32,625 INFO L225 Difference]: With dead ends: 381 [2020-11-07 01:52:32,625 INFO L226 Difference]: Without dead ends: 172 [2020-11-07 01:52:32,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:52:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-07 01:52:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-07 01:52:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-07 01:52:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2020-11-07 01:52:32,816 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 44 [2020-11-07 01:52:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:32,818 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2020-11-07 01:52:32,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:52:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2020-11-07 01:52:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 01:52:32,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:32,822 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] [2020-11-07 01:52:32,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:52:32,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:32,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:32,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1499984496, now seen corresponding path program 1 times [2020-11-07 01:52:32,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:32,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182914134] [2020-11-07 01:52:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:32,828 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:33,051 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-07 01:52:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:33,077 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 01:52:33,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182914134] [2020-11-07 01:52:33,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:33,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 01:52:33,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843689588] [2020-11-07 01:52:33,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 01:52:33,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 01:52:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 01:52:33,081 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand 4 states. [2020-11-07 01:52:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:33,977 INFO L93 Difference]: Finished difference Result 337 states and 398 transitions. [2020-11-07 01:52:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 01:52:33,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-07 01:52:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:33,981 INFO L225 Difference]: With dead ends: 337 [2020-11-07 01:52:33,982 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 01:52:33,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:52:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 01:52:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-07 01:52:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 01:52:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 217 transitions. [2020-11-07 01:52:34,060 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 217 transitions. Word has length 45 [2020-11-07 01:52:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:34,062 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 217 transitions. [2020-11-07 01:52:34,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 01:52:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 217 transitions. [2020-11-07 01:52:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 01:52:34,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:34,071 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 01:52:34,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:52:34,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash -641108479, now seen corresponding path program 1 times [2020-11-07 01:52:34,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:34,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562747315] [2020-11-07 01:52:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:34,199 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-07 01:52:34,510 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:52:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:34,739 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 01:52:36,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562747315] [2020-11-07 01:52:36,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:36,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-11-07 01:52:36,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444974651] [2020-11-07 01:52:36,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-07 01:52:36,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:36,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-07 01:52:36,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-11-07 01:52:36,442 INFO L87 Difference]: Start difference. First operand 187 states and 217 transitions. Second operand 27 states. [2020-11-07 01:52:37,738 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-07 01:52:38,473 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-07 01:52:38,609 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-07 01:52:38,825 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-07 01:52:39,479 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-07 01:52:39,628 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 01:52:39,904 WARN L194 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 01:52:40,238 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-07 01:52:40,384 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 01:52:40,643 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 01:52:41,178 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 01:52:41,340 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 01:52:41,572 WARN L194 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-11-07 01:52:42,149 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-07 01:52:42,873 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-11-07 01:52:43,213 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-11-07 01:52:43,350 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-07 01:52:43,560 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-11-07 01:52:43,691 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-07 01:52:44,892 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 01:52:45,142 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-11-07 01:52:45,291 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 01:52:45,510 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-11-07 01:52:45,660 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 01:52:45,903 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-11-07 01:52:46,391 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-07 01:52:46,649 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-07 01:52:46,951 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-07 01:52:47,336 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-07 01:52:47,603 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-11-07 01:52:47,924 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-07 01:52:48,232 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-11-07 01:52:48,575 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-07 01:52:48,854 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-11-07 01:52:49,190 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-07 01:52:49,482 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-11-07 01:52:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:49,932 INFO L93 Difference]: Finished difference Result 515 states and 610 transitions. [2020-11-07 01:52:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-11-07 01:52:49,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 67 [2020-11-07 01:52:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:49,938 INFO L225 Difference]: With dead ends: 515 [2020-11-07 01:52:49,938 INFO L226 Difference]: Without dead ends: 341 [2020-11-07 01:52:49,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1290, Invalid=7266, Unknown=0, NotChecked=0, Total=8556 [2020-11-07 01:52:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-07 01:52:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 302. [2020-11-07 01:52:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-11-07 01:52:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2020-11-07 01:52:50,042 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 67 [2020-11-07 01:52:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:50,043 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2020-11-07 01:52:50,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-07 01:52:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2020-11-07 01:52:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 01:52:50,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:50,045 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-11-07 01:52:50,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:52:50,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:50,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1240636639, now seen corresponding path program 1 times [2020-11-07 01:52:50,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:50,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011141563] [2020-11-07 01:52:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:50,206 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-07 01:52:50,355 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:52:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:52:50,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:52:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:52:50,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:52:50,577 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:52:50,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:52:50,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:52:50,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:52:50 BoogieIcfgContainer [2020-11-07 01:52:50,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:52:50,615 INFO L168 Benchmark]: Toolchain (without parser) took 20727.73 ms. Allocated memory was 155.2 MB in the beginning and 324.0 MB in the end (delta: 168.8 MB). Free memory was 131.4 MB in the beginning and 173.1 MB in the end (delta: -41.7 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:50,616 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:52:50,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.42 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 119.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:50,624 INFO L168 Benchmark]: Boogie Preprocessor took 61.17 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:50,626 INFO L168 Benchmark]: RCFGBuilder took 1245.07 ms. Allocated memory is still 155.2 MB. Free memory was 117.3 MB in the beginning and 113.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:50,627 INFO L168 Benchmark]: TraceAbstraction took 18958.09 ms. Allocated memory was 155.2 MB in the beginning and 324.0 MB in the end (delta: 168.8 MB). Free memory was 113.2 MB in the beginning and 173.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:50,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 444.42 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 119.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.17 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1245.07 ms. Allocated memory is still 155.2 MB. Free memory was 117.3 MB in the beginning and 113.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18958.09 ms. Allocated memory was 155.2 MB in the beginning and 324.0 MB in the end (delta: 168.8 MB). Free memory was 113.2 MB in the beginning and 173.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int m_flush = 1; [L8] int m_PipedOutputStream = 2; [L9] int m_close = 3; [L10] int m_write = 4; [L11] int m_connect_1 = 5; [L12] int m_connect_2 = 6; [L17] int q = 0; [L18] int method_id; [L21] int this_sink = 0; [L22] int this_sinkConnected = 0; [L25] COND TRUE 1 [L28] int P1=__VERIFIER_nondet_int(); [L29] int P2=__VERIFIER_nondet_int(); [L30] int P3=__VERIFIER_nondet_int(); [L31] int P4=__VERIFIER_nondet_int(); [L35] COND TRUE q == 0 [L36] COND TRUE __VERIFIER_nondet_int() [L40] method_id = 2 [L42] COND FALSE !(0) [L46] q = 2 [L48] this_sink=0 [L48] this_sinkConnected=0 [L25] COND TRUE 1 [L28] int P1=__VERIFIER_nondet_int(); [L29] int P2=__VERIFIER_nondet_int(); [L30] int P3=__VERIFIER_nondet_int(); [L31] int P4=__VERIFIER_nondet_int(); [L35] COND FALSE !(q == 0) [L55] COND FALSE !(q == 1) [L107] COND TRUE q == 2 [L108] COND FALSE !(__VERIFIER_nondet_int()) [L124] COND FALSE !(__VERIFIER_nondet_int()) [L140] COND FALSE !(__VERIFIER_nondet_int()) [L156] COND FALSE !(__VERIFIER_nondet_int()) [L172] COND FALSE !(__VERIFIER_nondet_int()) [L188] COND TRUE __VERIFIER_nondet_int() [L190] COND TRUE ((P2 != 1) && (P1 != 0)) [L192] method_id = 5 [L194] COND TRUE (((this_sink != 0) && (P1 != 0)) && ((P2 != 1) && (P1 != 0))) [L345] CALL reach_error() [L4] __assert_fail("0", "psyco_io_1.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 213 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 703 SDtfs, 2034 SDslu, 143 SDs, 0 SdLazy, 2928 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred 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: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 39 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 incorrect! Received shutdown request...